Abstract

Because of the non-linear response of photographic film to linear increases in light, the spectral quality of light output from phosphors, the extremely short duration of exposure for each pixel, and the differing gamuts of color available in film and color monitors, color compensation tables are necessary in digital film recorders to insure that film images correctly reproduce computer generated images. Compensation tables (look-up tables, or LUTs) serve as a mapping array between the digital count represented in the image desired and the digital count which is processed into the voltage applied to the CRT cathode in the film recorder.

© 1987 Optical Society of America